Martha Roby

That's the lesson many Republicans are drawing from Rep. Mark Sanford's surprise defeat Tuesday in his primary election in South Carolina. The victor, state Rep. Katie Arrington, repeatedly highlighted Sanford's criticism of the president.

The outcome is a cautionary tale for Republicans in Congress who try to work with Trump while also maintaining their independence. One wrong turn — or in Sanford's case, many — and they could face the wrath of a president who is quick to attack detractors as enemies, even in his own party.

"That's ultimately what the race devolved down to, which was, was I Trump enough?" Sanford told...

The year's biggest day of primary elections — with voters in eight states casting ballots in hundreds of congressional, state and local contests — closed Tuesday with two well-known Democrats prevailing in marquee California races while the outcomes of...

In his sternest rebuke yet, Alabama Sen. Richard Shelby said repeatedly Sunday his state can "do better" than electing fellow Republican Roy Moore to the U.S. Senate, making clear that a write-in candidate was far preferable to a man accused of sexual...

In a recorded midnight apology, Donald Trump declared, "I was wrong and I apologize," after being caught in a recording making shockingly vulgar and sexually charged comments. Yet he also defiantly dismissed the revelations as "nothing more than a...